BROWSE

Related Scientist

PARK, Tae-sun's photo.

PARK, Tae-sun
희귀 핵 연구단
more info

ITEM VIEW & DOWNLOAD

Effects of transient nonthermal particles on the big bang nucleosynthesis

DC Field Value Language
dc.contributor.authorTae-sun Park-
dc.contributor.authorKyung Joo Min-
dc.contributor.authorSeung-Woo Hong-
dc.date.accessioned2020-12-22T06:53:25Z-
dc.date.accessioned2020-12-22T06:53:25Z-
dc.date.available2020-12-22T06:53:25Z-
dc.date.available2020-12-22T06:53:25Z-
dc.date.created2020-06-12-
dc.date.issued2020-03-
dc.identifier.issn0218-3013-
dc.identifier.urihttps://pr.ibs.re.kr/handle/8788114/8709-
dc.description.abstract© 2020 World Scientific Publishing Company. The effects of introducing a small amount of nonthermal distribution (NTD) of elements in big bang nucleosynthesis (BBN) are studied by allowing a fraction of the NTD to be time-dependent so that it contributes only during a certain period of the BBN evolution. The fraction is modeled as a Gaussian-shaped function of log(T), where T is the temperature of the cosmos, and thus the function is specified by three parameters; the central temporal position, the width and the magnitude. The change in the average nuclear reaction rates due to the presence of the NTD is assumed to be proportional to the Maxwellian reaction rates but with temperature TNTD ζT, ζ being another parameter of our model. By scanning a wide four-dimensional parametric space at about half a million points, we have found about 130 points with χ2 < 1, at which the predicted primordial abundances of light elements are consistent with the observations. The magnitude parameter 0 of these points turns out to be scattered over a very wide range from 0 ∼ 10-19 to ∼ 10-1, and the ζ-parameter is found to be strongly correlated with the magnitude parameter 0. The temperature region with 0.3 × 109K ≲ T ≲ 0.4 × 109K or the temporal region t ≃ 103s seems to play a central role in lowering χ2-
dc.description.uri1-
dc.language영어-
dc.publisherWORLD SCIENTIFIC PUBL CO PTE LTD-
dc.subjectBig bang nucleosynthesis-
dc.subjectnonthermal distribution-
dc.subjecttransient-
dc.titleEffects of transient nonthermal particles on the big bang nucleosynthesis-
dc.typeArticle-
dc.type.rimsART-
dc.identifier.wosid000541736200004-
dc.identifier.scopusid2-s2.0-85085347877-
dc.identifier.rimsid72276-
dc.contributor.affiliatedAuthorTae-sun Park-
dc.identifier.doi10.1142/S0218301320500123-
dc.identifier.bibliographicCitationINTERNATIONAL JOURNAL OF MODERN PHYSICS E-NUCLEAR PHYSICS, v.29, no.3, pp.2050012-
dc.citation.titleINTERNATIONAL JOURNAL OF MODERN PHYSICS E-NUCLEAR PHYSICS-
dc.citation.volume29-
dc.citation.number3-
dc.citation.startPage2050012-
dc.description.journalClass1-
dc.description.journalRegisteredClassscie-
dc.subject.keywordPlusLITHIUM-
dc.subject.keywordPlusCOSMOLOGY-
dc.subject.keywordPlusELEMENTS-
dc.subject.keywordAuthorBig bang nucleosynthesis-
dc.subject.keywordAuthortransient-
dc.subject.keywordAuthornonthermal distribution-
Appears in Collections:
Center for Exotic Nuclear Studies(희귀 핵 연구단) > 1. Journal Papers (저널논문)
Files in This Item:
There are no files associated with this item.

qrcode

  • facebook

    twitter

  • Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.
해당 아이템을 이메일로 공유하기 원하시면 인증을 거치시기 바랍니다.

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

Browse